Phillip Sweet started Little Big Town's performance of "How Deep Is Your Love," and Jimi Westbrook, Karen Fairchild and Kimberly Schlapman joined in, filling the entire Staples Center with their unmistakable harmonies. Though not nominated in 2017, LBT's presence on the Grammys stage showed fans why they are already the holders of two trophies.

LBT also appeared earlier in the evening, to introduce Katy Perry's performance by singing a short clip of Perry's song "Teenage Dream."